Apparatus for and method of uniting vitreous parts.



110.846,823. PA'PPNTBD MAB. 12, 1907.

, l P2M. P. cAzIN. APPARATUS PoP'AND MPPPUD of' UNIPINGPITREOUS, PARTS. APPLIUATION FILED HAY 28; 1904. BENEWED AUG. 29, 1906.

. 5 BHBETB-BHEET 1.

APPARATUS POR AND METHOD 0F UNITING VITRBOUS PARTS.

APPLICATION FILED HAY 2B, 1904. RENBWBD A116. 29, 1906.

5 SHEETS-SHEET 2.

ATTORNEYS 110.846,823. PA'mmTm MAR. 12, 1907.

' P. M. F. GAZIAI.

APPARATUS PoR AND METHOD 0F UNITING VITRBOUS PART-s.

APPLIOATION FILED M'AY 2B, 1904. BENWED AUG. 29, 1906, v v

. @7 om* A E 30% ,@MALWM ATTORNEYJ 110.846.823l PATBNTBD MAVR.12, 1907.

' )Alu-.F.GAZIN.v

APPARATUS FOR AND METHODOP UNITING VITRBOUS PART 96.4- annls M? azzn N.s4e,323. v rnmnn nmz. 12. 1901,

M.v BGAZIN; l

APPARATUS PoR AND METHOD o1? UNITING VITRB'oUs PARTs,

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@gm v 6 nrromvfrs v or both of the parts to be joined during said joining operation and also independent holdfrom the bulb-holder after the parts have be- UNITED STATES PATENT --oEEIoE.

FRANCIS M. F. CAZIN, oF HoBoKlEN, NEW JERSEY.

APPARATUS FOR AND METHOD OF UNITING VITREOUS PARTS.

To JZ whom, it may concern:

Be it'known ,that I, FRANCIS M. F. Onzin', residing at Hoboken, in the county of `llud- .son and State of New Jersey, have invented certain new and useful Improvements` in Apparatus for and Methods of Uniting Vitreous Parts, of which the following is a specification.

My present invent-ion primarily relates to certain new and useful improvements in apparatus for uniting vitreous articles; and it more ljmrtic-ularly seeks to provide an apparatusior joining the bulb parts' in an electric incandescent lamp, such as` disclosed in my copending application filed, March 17, 1904, Q Serial No. 198,563.

The 'ap aratns for use in securing the base to the bu b in its essential nature consists in means for holding the parts of the lamp in contact, for rotating them, and of means for applying va stream "of glass to the joint between base and 4bulb parts, which stream of Q class may be either molten, plastic, or granuar. The invention also includes' means for heating the 'parts adjacentto the jointand.; the applied glass, so thatthe glass fed' to the l joint will be fused and bccome'adhercd to the part-s to be united, whereby'to secure a tight jouit.

' Again, my invention also includes means for admitting or withdrawing air from either ers for the said parts to be joined, as well as means for \\'it.l1draw111g the completed lamp come joined together.

This invention also includes a process ofjoining two or more vitreous parts, which -consists generally in admitting compressed air to such parts while'simultaneously rotating them and applying a stream of glass to the joint while heating the said joint.

In its detailed nature my invention consists in certain construction, arrangement, and combination of parts, all of which will be hereinafter tirst ldescribed and then specifically pointed out in the appended claims, ref.- erenee being had to the accompanying drawings, in which `igure 1 is a vertical section and part elevation of my improved apparatus. Fig. 2 is a top plan view thereof. Fig. 3 is a crosssec'tion on vthe line 3 3 of Fig. 1. Fi 4 is a vertical longitudinal section of a s ightlymodified form of my apparatus. Fig. 5 is a,

Specification of Letters Patent.

Application filed May, 1904. Renewed August 29,1906; Serial No. 332,483,

l and the apparatus used tlberefor. f mayconslst of a single blown piece conipris- Patented Marcil 12, 1907.

vertical longitudinal section ol the auxiliary apparatus for joining the parts ol a t o-part bulb. Fig. 6 is a top plan view thereof. Fig'. 7 shows in longitudinal section the apparatus disclosed in Fig. 5 as used ojoi'n a slightly-modilied forni oi double bulb. Fig. S sthows in longitudinal sec-tion a portion ol" the apjn'u'atus disclosed in Fig. 1. as used to join the modilied forni, oi bulb disclosed in Fig. 7 to its base.

Referring now to. the accompanying drawings, .in which like numerals and letters ol reference indicate like parts in all of thetignres, to more clearly understand the use ol my invention it. will be necessary to first `lniellv-describe the parts to be joined and then describe the method of joining the saine The bulb ing the inner envelop l and theouter envelop '2, Athe two envelops being united at the base of the bulb, whereby the inner bulb closes the aperture, which would. be otherwise formed in the outer bulb, a conical or flared seat 3 beingformed at the mouth of the inner bulb. The base 5 of the huup consists oi' a crown 6 and a stem 7, which by preference is threaded to provide a convenient. means for mounting it in the socket, the crownl part being surrounded by a conical shoulder 8 to snugly tit within the conical seat of the bulb, as shown. The base is also provided with a luminant-carrying member 10, through which the .inlcading wires 11 pass and to which inleading wires 11 and the said member 10 the filament or luminant l? is connected in the usual manner. Again, for many purposes it may be desiredfthatI instead ,oi constructing the bulb of a single blown piece, as shown. in Fig. 1, tbc same may be constructed of two parts, as shown in .l Figs. 7 and S, byrelerenec to which it will lre seen that he said bulb consists of' the inner bulb 1 a d t-he outerbulb 2, as above, thc said bul s having annular rims 1"L 2, which overlap each other to forni the conical seat. for co" )erating with the conical seat S of the base. Such being the construction ot the bulb parts themselves, I will now describe, my improved apparatus and the manner in which it is used In securing the base and bulb together and also the apparatus as used in securing the two bulb-sections together when suc-h form of bulb is used, and in doing so l. will describe my invention with reference to the parts shown and described. although. it

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v 16, and the said ca will be undersl ood that in niy invention, with respect thereof, is not restricted to such parts or even to uniting the part-soi lamps, but il may be used in uniting parts otherwise ei'instrueted. l. Generally speaking', the apparatus invented by ine comprises one or more rotatingr or shalt paris having suitable bearings and nieans for imparting rotary motion -to said parts and to the parts revolving` thi-rewith and also means for holding` the parts with their edges in proper position to he joined. The means for heating and fusing in sealing' or joining' the parts together preterabl)r consists of' .lunsen 'llanies or hlo\\'pip(\s directed to the proper place \\'itli`i'espe t to the parts to be joined. r

1.5 designates a suitable base'jwhlch, as shown in the accompanying' dra-wings, is of substantially triangular shape and which is formed with abed-plate 15l oi" dovetailed shape in cross-section.' `Secured tothe bedplate 15 is a carriage 16, which includes the base or bed plate engaging portion 1'6a and thejbearingportion.16". 7'll`his bearing 16" is longitudinally bored, as at 16", on an axial hneparallel with the'hed-plate 15 torcceive ther 'tubular shaft section 1-7d of' the bulbchuck 1.7, hereinafter again referred t'o.` The bearing portion 16" is split at oneA end, as at 1 (S2-'fand is provided with a pa-ir of e'ars'16i 1.6, through which the bolt 1.6K passes to' clamp thev said split end together to firmly hold the plug,r 1:69, to the nipple 1,6f of whichthe hose connection 16g from the air-pumpmechanislrn (not shown) joins. The inner end of the u iliegcorrespondingly-formed yen slial "t-section"17l to forni a practically airtight joint. The other vend 16h of the bearing member 16 is adapted to receive a unioncap 16m, provided with an oiling-aperture 16m cooperates with the annular rib 17 C o the tubular shaft 17 i. The bulb-chuck 17 also includes a'body portion 17, to which the tubular receiver 17e is secured, and this body portion or head 17d has a concaved portion 17 f' on its inner face concentrically arranged withrespect to the bore 17x oi the head and shaft section and is provided with a rubber asket 18, as shown.

19 designates a pulzley whichfis secured to the head 17 d and around which and the guide or tightener pulleyslQa 19a the drive-belt 20 passes. f

l Held within the tubular -receiver 17e and in parallel alinenient with each other and the axis ot the chuck are a plurality of rubber cushions 21. 21, bynieans of which the outer bulb 2 is held in place with its neck 2c in the bore 17x and its end against the gasket V18 wit h its base-engaging portion projecting beyend 1 he open end of the tubular receiver 17 '22 designates a second carriage which inehules a base 22, having a dovetailed slot the bed-plate 15u, engages.

` secured.

16e is `countersunk toco erate with 17b of the.-

22" in its lower face to 'coperate with the bed-plate 15", and the said carriage 22 also lncludes a longitudinal slot 22"', 1n which the rack-bar 22@l 1s held by the bolts 22" 22 or otherwise, and with which thc segmental 7o.

pinion 23, projecting through a slot 15"v ol Thepinioii 23 is secured to a. shaft 214, inounted in the 'lranie 1.5.to one end of which sha'l't the ai'in 24?,

carrying" balance-weight 24", is connected, 75

alines with the bore 16 ol' the -bearingy 16". A long'itudnially-movable sleeve '26 is held in the bore 22g oi the beailng nienibei22, as shown, and this sleeve 26 has a shuipin 26, which projects into a lmigitudinal slot 22" in the 85 'bearing 22" to prevent turning-ol` the sleeve.

The sleeve '26 al its inner end carries an annulai disk 266", to which lthel union-cap 27 is 28 designates which includes a socket 2t), which niay bc ol' the ordinary lamp-socket type, (sec Fig. 4,) or which may bey constructed on the lines indicated in Fig. 1, by reference to which it will be seen thesocket 29 of the chuck 28 cn- 95 gages the threaded end oi the lainp-base and' an annular mouth 2Q", which includes a rubber gasket or ring 29', against which the lamp-base is held. The chuck 28 also includes anvannular disk portion 28 to coico operate with the cap 27 and a tubular neck or spindle 28", which passes through thev sleeve '26 and joins with the tube 30 of the air pumpingy mechanism.` Disposed between the' disk 28a and the disk 26h is a ball- 'i o 5 i holder 31 to carry the bearing-balls 31".

26g indicates a buHer-spring carried by the sleeve'26 between the disk 26b and the bearing 22f for afpurpose readily apparent. Se-

cured to the bearing 22f is a support 32, to 11o which a socketed meinber 32Il is adjustably connected and in which sockctcd ineinber 32al the hopper-carrying rod 33 is adjustably held.

33 designates the hopper, which may beof i 15 any approved construction and which, as shown in the drawings, includes the conicallyshaped end 33", having an aperture 33e, controlled by the needleivalve 34, which is normallyspring-pressed to its closed position and i 2o 36'designates'a third carriage disposed bei 25 tween the carriages 16 and 22 and likewise n iovable on the bed-plate 15", and this carmage 36' has a transverse bore 36a, in which 'burner feed-pipes are held and with'which the gas-feed pipes 38 join. Each oi these 13o the base-holdingr chuck- 9o vertical feedpipes have a cross-head 38a, to which the vert ically-disposed burner-pipes 39 are turnably or pivotally joined, and these pipes 551 are turned on their vertical axis by means ot the linger members'37, as shown, lo direct the burners 41, which are `carried by the upper ends ol the said pipes 39.' These burners 4l are oll elongated shape with a concared upper surlacc and provided on said surface with apertures 41 to permit egress olthe gas.

4'. designates an extension from the head 3S, which carries -a second hollowr head 425, to which the blowpipes 44 are pivotally secured and are :uljustablc'by means ot'- the lingerpiece 45. These blowpioes, as well as the burner-pipes 37, have stop-cocks 44X and 37x, respectively, to shut oil thc supply ot air and gas, it being understood that the air-pipe 46 connects with the head 43. The blowpipes Lt-t have their nozzles 44 directed over the burners 4() to directthe llame to the desired point at the juncture of the bulb and base. j j

l'tetierring to Fig. 1, it will be noticed that.. I hold the bed-plate on an angle of about thirty degrees tothe horizontal, so as to maintam the hop-per 1n a vertical positlon as well as the burner-pipes and to keep the line ol' juncture corresponding to the vertical axis ot' the hopper where the glass 1s deposited on the parts to be joined in a practically vertical position.

Having thus generally descrlbed the construction of the apparatus used 1n joining bulb and base, I shall new proceed to describe. the construction vof apparatus'used in joining the two parts of the bulb together when thc bulb is not made of a single piece.' By reference to Figs. 5 and 6'it will be seen that when used to join' the outer and inner bulbs 2 and 1, respectively, together the bulb-chuck is held in a vertical-position and is of substantially the same construction -as that shown in lilig. 1, with the exception that the tubular shaft-section 17 u in this form is closed at one end, to which end thedrivepulley 19 is connected instead of being connected to the head-piece 17 d. Again, the tubular shaft-section 17 u is provided 'with an external annular groove 17z and a series ol' apertures 17V, which communicate with the said groove 17z and the internal bore of the said sleeve. In this form also the bearing member 5() for the tubular shaft 17 a is vertically disposed and forms a part-of the base 51, and

' the said bearing 50 has an aperture 50. to receive the coupling-pipe 50g, to which -the airpumping-mechanism-connecting tube is 'connected, and the said bearing 50 at its upper end isprovidedwith an oil-receiving groove 50C, with which the oil-admitting tube 50i connnunicates. In this casethe burner nicchanis1n,'which is of the same construction as in' Fig. 1, is vertically supported from j the base 51, as is also the hopper, which is vertically adjusted 011 the supporting-rod 55. The burner members are. so arranged as to direct the llame at the point where. the vertical axial line of the hopper intercepts the adjoining edges ol the parts to be sealed together. (See Fig. 5.)

Having thus generally described the construction ol' the various apparatus used in the formation ol my improved lamp-bulbs, I shall now brielly describe the method or manner in which the said bulbs/.are sealed. rl. shall iirst describe the manner ol" sealing the base to the bulb regardless ol'- whether the bulb be formed foll a single piece or ol two pieces joined t'ogetl'ier. ,l vlirst place the. bulb in the bulb-chuck and the base in the bascchuck, it being understood that at this time the base-chuck carriage 2) has been moved up the inclined bed-plate by moving the handle downwzu'dly.. l then move the handle vupwardly to bringthe baseand the lampbulb in proper eorrelat i re posit ion, where they are then held by means ol' the lmlanee-weiglit cooperating with tbe hamlle-shalt. l. then adjust the hopper and the burners to direct the glass from the hopper and the burner- .'Ilames to the proper point and then set the chucks in motion by means ol" the drive-belt driven lby any suitable power mechanism. (Not shown.) The pressure of the bull'erspring will serve to hold the base against the bulb with sullicient cohesion to permit the base and bulb torcvolvc together. After the stream of glass from the hopper is fused and sealed to the bulbs at their joint and the bulbs are securely sealed together t-hc same may be removed'and other parts placed into position for oining.

of the base and bulb I preferably 'force cominto the base portion and between the outer and inncrlmlbs to exert pressure against the softened glass at the joint to weld the saine together at the same time the sealing substance is being applied. In this case it should be iun'lerstood that the chamber formed by the inner bulb has no connection with that formed between the ,inner and outer bulbs. `Again, l may while the sealing process taking place instead ol forcing con'ipresserl air into the parts to be sealed, exhaust the bulbs to suck the sealing material into the joint between the parts, and when this is donc theinnervbulb-chamber is in conimunication with the. chamber between the louter and innerl bulbs by means ol an aperture in the inner bulb.

thc'process ol manufacturing bulbs disclosed in my copending application tiled March 15,

1904, Serial No. ]t),34(). Y'

When it is desired to in akoy the bulbs of two During the sealing and joining operation My invention is also applicable for use in parts instead of a single part, I join the said IVO ressed air through the tubular shaft-sections IIC two parts by means of the apparatus shown in Fig. 5, by reference to which it will be seen' that the outer bulb.2 is held in the bulbchuck in a vertical position and the inner bulb rests with-its flange upon the flange of the outer'bulb, and the hopper and burners are so arranged that a stream of the sealing material will be deposited at thev edges of the inner and outer bulbs while thel said edges are heated by the burners and at the same time airis exhausted from between thetwo bulbs parts to suck such sealing material into the joint and also to weld the joint together by such heating of the parts during the suction or exhaustion thereof.

The sealing material which I may use may be of any approved'kind; but I preferably use an all-glassl solder having b-iit one coeflicient ot contraction and expansion-a result directly impossible when a metallic solder' is used. The importance and almost necessity ot' joining the all-glass parts by means of an all-glass solder will be readily apparent when luminants and' filaments are adopted for use, which in View of other more important nalities secured dispense in part with iiexi )ility and which would receive life-shortening cracks by beingpassed through narrow necks, and consequently demand wide necks to their bulbs, and which is not feasible or prac* ticable under the method of glass-blowing now in common use.

It should be understood that the hea-ting apparatus for melting the glass solder -and for heating the joint at the point of application consists, essentially, ot blowpipe-burners which are the equivalent of the Bunsen jet,

ejecting simultaneously combustible air andl gas or oxygen or a mixture thereof properly pro ortioned at the will of the operator to pro uce the'oxidizing oi' reducing flame and i aving means whereby the tot-alquantity ofl ejected mixed air and gas may be properly regulated to produce higher or lower temperatures.

" In my improved ap ara-tus' I' preferably use a pluralityl of such ames, regulating the function of the parts for the contributive.

'it will be seen it may be also used for exhausting the' )arts during the joining oper.- ation. It will be also seen that I have provided a very simple and effective inea-ns whereby vto adjust the base and bulbs so vas to fit as cone and collar and also mechanism for pulling the lamp out of the bulb-chucks and also at proper times to exercise a moderate them together in proper position.

for o ieratinv 'the driving-belt the saine A h i per se terms no part of my invention.

with. ythe accompanying drawings, it is thought that the complete construction, operation, and advantages oiiny improved apparatus and the method in which it is used will be readily understood by those skilled in the art to which it appertains, as well as the man v advantages of my invention, among which I desire to call attention tothe-following facts: First,- that glass bulbs can be. made without any change in form of the in use in the art can -by this apparatus -be and with better conditions for making the joint. hermetical than in machines now-in common use in theart; third, the action of joining the parts may be made controllable by coloring the solder glass powder in any approved manner and thereby render it disjoined iourtln joints made under the old my improved method the form is not only preserved, but its beauty increased by the color ring or bead covering the joint.

I desire it understood that I do not limit rangement, and combination of parts maybe. f made without departing from the invention j IOI or the scope of the appended claims.

Ilaving thus described my invention, wl'i'at I claim, and desire to securebyLetters Patent, is- 1 1. In an apparatus for joining vitreousarticles, means for heating the parts adj acenti the joint, means for applying pressure to the 'i' saidv parts from within to cause `the article to become welded and. means for applying a sealing'material to the jouit.

2. In an apparatus for making joints being the parts adjacent to the joint, meanstor forcing air into the hollow articles while be'- ing heated to press the heated parts ioget-her to Weld the saine,.means for applying the vitreous sea-ling material to the. joint and means for simultaneously rotating said parts. Y

3. In an apparatus ofthe character stated, 'a base, a bearing mounted on said base, a bulb-chuck having a shaft rota-table in said bearing, said chuck-including a head portion and a bulb-receiver carried thereby, substanscribed.

pressure to the parts to Abe joined toweld Any suitable motive power may be used From the foregoing, taken in connection' joined parts; second, joints of such ,lengthy as could not be made by any apparatus now e made with the greatest degree of perfectii'm tinguishable from the glass of the parts to'be art are as a rule to be disigured, while under myself to the exact construction, arrange-v ment, and operation 'of parts hereinbefore. de`.

scribed, but I desire it understood 'that slight. changes in the detailed construction, ar-

tween hollow vitreous parts, means for heattially as shown and for the purposes de- 4. In an apparatus ofthe character stated,

a base, a bearing mounted on said base, a-

rial to the joint.

5. In an apparatus of the character stated, a base, a bearing mounted 011 said base, a bulb-chuck having a shaft rotatable in said bearing, said chuck including ahead portion anda bulb-receiver carried thereby, cushions held inthe said receiver to engage said bulb and hold it out of engagement with the receiver-walls, and means Afor rotating said chuck and means for feeding a vitreous maferial to the joint.

G. ln an apparatus of the character stated, a base, a bearing mounted on said base, a

bulb-chuck having a shaft rotatable in said bearing, said chuck including ahead portion, and` a bulb-receiver carried thereby, said chuck-shaft being hollow to receive the bulbneck and communicate with lthe interior of the bulb, means for rotating said chuck and means for feeding vitreous material to the joint.

7. In an apparatus of the character stated, a base, a bearing mounted on said base, a bulb-chuck having a shaft rotatable in said bearing, said chuck including a head portion and a luilb-receiver, cushions held within said receiver to hold the bulb out of engagement with the receiver-walls, said chuckhead having a Aconcaved portion, a. gasket seated in said coneaved portion, said chuckshaft being hollow to communicate with the interior of the bulb, and means for causing a differential air-pressure between the outside and inside of the bulb while in such chuck and means for applying a vitreous material to the joint, substantially as shown and for the purposes described.

8. In an apparatus of the class described, a base including a bed-plate., a carriage having aV bearing mounted thereon, a bulbchuck having a shaft rotatably mountedA in said bearing to receive the bulb, a second carriage mounted on-` said bed-plate, a basechuck carried thereby to receive the lampbase, means for moving said second carriage to or from the first carriage and means for sealing the lamp-bulb and lamp-'base t6- gether.

9. In an apparatus of the class described, a base including a bed-plate, a carriage having a bearing mounted thereon, a bulb-chuck having a shaft rotatably mounted in said bearing to receive the bulb, a second carriage mounted on said bed-plate, a ,basechuck carried thereby to receive the lampbase, and means for moving said second carriage to or from the first carriage, means for 'normally forcing said second carriage to'- Ward said first carriage to hold the base part against the bulb part and means for sealing Athe lamp base and bulb together substantially as shown and for the purposes described.

10. In an apparatus of the character stated, a base including a bed-plate, a carriage having a bearing mounted thereon, a bulbchuck'including a shaft rotatably mounted insaid bearing to receive the bulb, a second carriage mounted on said bed-plate, a basechuck carried thereby to receive the lampbase, means for moving said second carriage to or 'l'roin'the first carriage, said means including a gear mounted on said base, and a rack carried by said second carriage. for cooperating 'therewith and means for sealing the lamp'base and bulb together, substantially as shown and for the purposes described.

1l. In an apparatus o'l" the character stated, a base including a bed-p]at a carriage having a bearing mounted thereon, a bulbchuck including a shaft rotatablyr mounted in said bearing to receive. the bulb, a second carriage mounted ,on said bed-plate, a basechuck carried thereby to receive the lampbase, means for moving said second carriage to or irom the iirst carriage, said means includinga gear mounted on said base, and a rack carried by. said second carriage for cooperating therewith, vmeans for normally" moving said second carriage toward said first carriage and means forsealing the lamp base and bulli together substantially as shown and for the purposes described.

12. In an a )paratus of the character stated, a base includlng a bed-plate, a carriage hav- IOO ing a bearing mountedy thereon, a bulbchuck having a shaft rotatably mounted in said bearing to receive the bulb', a'seeond carriage mounted on said bed-plate, a basechuck carried thereby to receive the lampbase, means for normally moving said second carriage toward said iirst .j carriage lto* hold the base and bulb parts together, vmeans for limiting such normal movement and means for applying a sealing material to the joint between the base and bulb parts of the lamp. v

Y 13. In an apparatus of the character stated, a base including a bed-plate, al carriage mounted thereon, a bulb-chuck carried by said carriage, a second carriage mounted on the bed-plate, a base-chuck carried by said second carriage, means for moving one of said carriages toward' the other to hold said base and bulb parts together, means for rotating said chucks, a hopper carried by said second carriage,- and means for applying a vitreous material to the joint between the lamp and basel bulbs, substantially as shown and for the 'purposes described. l

14. In an apparatusof the 'characterl stated, a base including a bed-plate, a carriage mounted thereon, a'bulb-chuek carried by said carriage, a second carriage mounted on the bed-plate, a base-chuck carried by said second carriage, means for moving one of said carriages toward the other to hold Q said base and bulb lparts together, means for f 'rotating said ehue s, a hopper carried by said second carriage, burners mounted on the base and nieanst'or feeding a vitreous` 1o material to the joint between the lamp base and bulb, substantially as shown and for. the

p iirposes described.

15. In an apparatus of the character stated, a base including a bed-plate, a carriage mounted thereon, a bulb-chuck earried by said carriage, va second carriage' ried by said third carriage land means for feeding a vitreous 'material to the joint subv-staiitially as shown and for the purposes described.

16. ln an apparatusI of the character 3o stated, a base including a bed-plate, a carriage. mounted thereon, a bulb-chuck carried by said carriage, a second carriage mounted ou the bed-plate, a base-'ehuck'carried by said second4 carriage, means for moving one of said carriages toward the other to hold the base and bulb parts together, means for r0- tating said chucks, va hopper carried by said -seeond carriage, athird carriage adjustably mounted on the base. between said 4first and 4o second carriages, burner members carried by said third carriage, means for movingv one of draw the' joined base and bulb from the bulbchuck and means -t'or applying a vitreous j material tothe joint substantially as shown and for the purposes described.

17 In an .apparatus ol" the character l said carriages away from the other to withl j bulb-chuck'rotatably mounted in said bear- I ing to receive the lamp-bulbs, a hopper ari ranged above said chuck to leed sea ing inaterial to the joint between the. bulb parts, l burners carried by the base for heating the i. joint between the. parts to be sealed substan- 18.l The method of joining hollow vitreous articles, consisting in heating the parts adjacent the joint, and applyii'ig pressure to such parts from within each articlel to cause. theI articles to become welded together and in simiiltaiieoiisly 'applying a sealing material to tlie joint. j

19. The method of joining hollow vitreous articles, consisting in heating the parts adjacent the joint and applying pressure to suoli parts from. within the jointy to canse the joint to become welded together indsiiniiltaneiiiusly feeding vitreous material to the joint.

FRANCIS M. F. (AZIN.

Witnesses z MiNNA E. CAziN, CHAs. C. WASHBURN.

j stated, a base, a bearii'ig carried thereby, a'

tially' as shown and for the purposes del 7c A method of making joints betwcen hollow vitreous parts consisting 1n heating 

